Starting aid for high pressure sodium vapor lamp

Details Starting aid for high pressure sodium vapor lamp Starting aid for high pressure sodium vapor lamp

1980-12-29

1986-12-30

Dixon, Harold

Electric lamp and discharge devices

With gas or vapor

Three or more electrode discharge device

313607, 315344, 315349, 315357, H01J 1744

Patent

active

046331352

ABSTRACT:
A high pressure sodium vapor lamp comprising an alumina arc tube within an outer glass envelope is provided with a capacitive starting aid in the interenvelope space. The aid comprises a stiff wire which is pressed lengthwise against the side of the arc tube by a bimetal arm swinging in a plane normal to the lamp axis. Preferably the wire has a camber concave towards the arc tube which is flattened out at room temperature. In the event of a reclosure, the camber shortens the hot restart time.

REFERENCES:
patent: 2156068 (1939-04-01), Ruttenauer et al.
patent: 2829295 (1958-04-01), Gast et al.
patent: 3872340 (1975-03-01), Collins
patent: 4065370 (1977-12-01), Noble et al.
patent: 4074163 (1978-02-01), Van der Leeuw
patent: 4146813 (1979-03-01), van Vliet

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